Automatic safety passenger-car-door lock



Oct- 6 1925- 1,556,452

L. MAURY AUTOMATIC SAFETY PASSENGER CAR DOOR LOCKS Filegl July 5, 1923 2 Sheets-Sheet 1 Inreflwr ff w 1,556,45 L. MAURY AUTOMATIC SAFETY PASSENGER CAR DOOR LOOKS E Filog ui 5 Z'ShQets-Shut 2 vg G ,Inren'l'or I Patented Oct. 6, 1925.

v j N1rep'tsrmss fnnoiv natrnmor moms, FRANCE.

AUTOMATIC SAFETY PASSENGER-CAR-DOOR Locx.

Application filed July 3,

To all whom it may camera Be'itfknown thatj'I, LfiONzMAURY, a citizen of France, and a resident of Begles, in the Department de la Gironde, France, have invented certain new and useful Improvements in Automatic Safety-'Passenger-Can Door Locks, of which the following is a specification.

The invention relates to automatic door locks for railway carriages and its object is to provide a construction locking closed the doors of the carriages during the run of the railway train.

In the accompanying drawings,

Figure 1 is a detail vertical sectional view of the car wheel driven mechanism for operating the car door latches, showing the same in latch releasing position, as when the car is not in motion.

Figure 2 is a similar view of the same in latch operating position, as when the car is in motion. 7

Figure 3 is a detail elevation of the lever 71 and associated devices.

Figure 4 is a detail elevation of the car wheel driven apparatus, the latch operating means and the latch.

Figure 5 is a detail sectional view of the latch, in release position. a

Figure 6 is a similar view of the same in engaged position.

Figure 6 2 is a detail elevation of the same, at right angles to Figures 5 and 6.

Figure 7 is an end elevation of a car equipped with my improved apparatus.

Figure 8 is a plan of the same.

Figure 9 is a side elevation of the same.

The apparatus comprises:

1. A mechanism of control by means of a pulley B in frictional engagementwith'the wheel of the car and receiving thereby its rotary motion;

2. As many looks as there are doors in the car;

3. A system of connecting links and the like for the difi'erent locks of the mechanism.

The mechanism is enclosed in a box A fixed below the car in the proximity of a wheel.

It consists of an axle b carrying outside of the box A a pulley B of leather or other resisting material and, in the box A, a movable disc 03 and a sleeve e, fixed, and provided with two projections f serving for articulation of two wings with counter- Qweights and cam [The axle carries-besides, a sp ralsprmghf.

fA crank lever 2, Whic'h is forked, 'is' f articu- 'lated in a web of the box, at y and connected to a link 70 actuating the looks.

The pulley -B set in motion owing to the contact with the wheel of the car, during the run'of the latter, causes rotation of the axle b at a variable speed, according to the speed of the train.

By its rotary motion the shaft actuates th sleeve 6 and projects, owing to the action of the centrifugal force, the cam wings g, in

such manner, that the cams draw nearer to' the axis, whereas the counterweights are moving away from the axis.

Owing to their position the cams push the discs 03 which compress the spring h and pushes'the fork of the lever 71. V

This lever e displaces now the link is, horizontally.

If stopping, the contrary actuation is pro- I duced and the spiral spring h pushes back the disc d.

The link is is connected, by means of an angular link Z to as many connecting rods n as there are doors in the car, with aid of a shaft mplaced along the car and below the same.

The horizontal motion of the rod 70 is hence transmitted, vertically, to different rods n by means of the angular link Z and the harm. I 1

All rods n abut at the locks of the doors.

The locks consist-Figs. 4 to 6-of a part 0 fixed to the car, wherein moves a bolt or the like 20 provided with acollar g forming abutment; this bolt carries furthermore two spiral springs r and r and a pin s.

A curved lever t fixed at u is controlled by the rod n. WVhile the car is running this lever presses upon the pin 5* and pushes the bolt which looks the door.

If stopping, the lever t does not abut any more against the said pin 8 and the spiral spring r expands and releases the belt.

In case that a door has not been shut, after the start of the train, the bolt though it has worked, yet did it not accomplish its purpose; then, the door shuts by itself against herence between the pulley B and the car wheel, a spring 00 is disposed between the axis and the box A.

hat I claim is:

Apparatus for automatically locking the doors of railway cars, comprising a car wheel driven shaft, a disc movable longitudinally thereon, door latching means, operating means for said latching means including a lever movable in one direction by said disc, centrifugally acting means to move said disc in such direction, and thereby cause the door to remain latched when the car is in motion and a spring to move said disc in the reverse direction when the car stops and thereby causes the latches to be released, said latch comprising a latching member, an actuating member, movable independently thereof, a spring between said members to cause the former to beactuated bythe latter when the latter is moved inwardly, and a second spring to move the actuating member outwardly when not restrained by said operating means.

In witness whereof I affix my signature.

LEON MAURY. 

